SanDisk Extreme microSD Express 256GB

Experience next-generation storage performance with the SanDisk Extreme microSD Express 256GB Memory Card, model SDSQXFN-256G-GN4NN.

Designed with a PCIe Gen 3 NVMe interface, this high-performance microSDXC card delivers sequential read speeds of up to 880MB/s and sequential write speeds of up to 650MB/s. For demanding workloads, the 256GB version has a minimum sustained write speed of 210MB/s, although actual performance depends on the compatible host device and operating conditions.

Fast Performance for Gaming & Content Creation

The high-speed interface makes the SanDisk microSD Express suitable for compatible handheld gaming devices, helping reduce loading times and providing a smoother gaming experience. It can also be used for high-resolution content and supports up to 5.3K video capture on compatible devices, with support for 8K video possible on future compatible hardware.

Next-Generation PCIe NVMe Technology

Unlike conventional UHS-I microSD cards, the microSD Express platform combines a standard microSD form factor with PCIe Gen 3 NVMe technology. This provides significantly higher potential transfer performance while maintaining compatibility with microSD UHS-I devices, where the card operates at UHS-I speeds.

Durable Design

The card is designed to withstand demanding environments and is rated as resistant to water, temperature extremes, humidity, drops, shock, magnets, X-rays and wear-out. SanDisk also specifies an operating temperature range of -25°C to 85°C.

Ideal For

• Handheld gaming devices
• Action cameras
• Drones
• Android smartphones and tablets
• High-resolution video recording
• Photography and large media files
• Fast file transfers
• Expanding compatible device storage

Important: Maximum speeds require a compatible microSD Express host/device. When used in a conventional microSD UHS-I or UHS-II device, performance will be limited by that device/interface.

Technical Specifications